USB2227 datasheet(21/26 Pages) SMSC

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4th Generation USB2.0 Flash Media Controller with Integrated Card Power FETs

Datasheet

SMSC USB2227/USB2228

Revision 1.77 (06-13-05)

DATASHEET

Chapter 7 DC Parameters

7.1

Maximum Guaranteed Ratings

Operating Temperature Range ............................................................................................0oC to +70oC

Storage Temperature Range............................................................................................. -55o to +150oC

Lead Temperature Range (soldering, 10 seconds) ...................................................................... +325oC

Positive Voltage on GPIO3, with respect to Ground......................................................................... 5.5V

Positive Voltage on any signal pin, with respect to Ground ............................................................. 4.6V

Positive Voltage on XTAL1, with respect to Ground ......................................................................... 4.0V

Positive Voltage on XTAL2, with respect to Ground ......................................................................... 2.5V

Negative Voltage on GPIO8, 10 & 11, with respect to Ground (see Note 7.2)............................... -0.5V

Negative Voltage on any pin, with respect to Ground ..................................................................... -0.5V

Maximum VDD18, VDD18PLL .............................................................................................................. +2.5V

Maximum VDD33, VDDA33 ................................................................................................................. +4.6V

*Stresses above the specified parameters could cause permanent damage to the device. This is a

stress rating only and functional operation of the device at any other condition above those indicated

in the operation sections of this specification is not implied.

Note 7.1

When powering this device from laboratory or system power supplies, it is important that

the Absolute Maximum Ratings not be exceeded or device failure can result. Some power

supplies exhibit voltage spikes on their outputs when the AC power is switched on or off.

In addition, voltage transients on the AC power line may appear on the DC output. When

this possibility exists, it is suggested that a clamp circuit be used.

Note 7.2

When internal power FET operation of these pins is enabled, these pins may be

simultaneously shorted to ground or any voltage up to 3.63V indefinitely, without damage

to the device as long as VDD33 and VDDA33 are less than 3.63V and TA is less than 70°C.

7.2

DC Electrical Characteristics

(TA = 0°C - 70°C, VDD33, VDDA33 = +3.3 V ± 0.3 V, VDD18, VDD18PLL = +1.8 V ± 10%,)

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

COMMENTS

I,IPU & IPD Type Input Buffer

Low Input Level

High Input Level

Pull Down

Pull Up

VILI

VIHI

2.0

0.8

µA

TTL Levels

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